Social Hall (Salt Lake City)

The Social Hall was a historic theater and multi-use building in Salt Lake City, Utah. Opened on New Year's Day 1853, the structure has often been called the first theater built "west of the Missouri River." Besides its use as a playhouse, it served as a meeting and lecture hall, hosted sessions of the Utah Territorial Legislative Assembly, was the first home of the Salt Lake Stake Academy (now Ensign College), and later hosted the first the gym in the region.

Source: Wikipedia — Social Hall (Salt Lake City) (CC BY-SA 4.0)